Maas Energy Works dairy digester at Legacy Ranch in Pixley, Calif. First of a two-part series on renewable natural gas in the agricultural sector. Renewable natural gas, or methane from non-fossil ...

PIXLEY, Calif. — The stench of cow feces, urine and ammonia forces residents to keep windows and doors closed in parts of California's farming country. Some people constantly run air purifiers at home ...

Explore the challenges facing the manure biogas project, including loan delinquencies and environmental concerns.

Methane remains in the atmosphere for about 12 years, much shorter than carbon dioxide (CO₂), but it is far more effective at ...